Heat and Mass Transfer The unit of overall coefficient of heat transfer is kcal/m² kcal/hr °C kcal/m² hr °C kcal/m hr °C kcal/m² kcal/hr °C kcal/m² hr °C kcal/m hr °C ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Thermal diffusivity of a substance is given by (where h = Thermal diffusivity, ρ = Density of substance, S = Specific heat, and k = Thermal conductivity) h = ρS/k h = k/ ρS h = S/ρk h = kρ/S h = ρS/k h = k/ ρS h = S/ρk h = kρ/S ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Wien’s law states that the wave length corresponding to ________ is proportional to the absolute temperature. Minimum energy None of these Maximum energy Both (A) and (B) Minimum energy None of these Maximum energy Both (A) and (B) ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The total emissivity power is .defined as the total amount of radiation emitted by a black body per unit Time Area Temperature Thickness Time Area Temperature Thickness ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The process of heat transfer from one particle of the fluid to another by the actual movement of the fluid particles due to difference of density caused by temperature of the particle is known as Radiation Conduction Forced convection Free convection Radiation Conduction Forced convection Free convection ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The emissive power of a body depends upon its All of these Wave length Temperature Physical nature All of these Wave length Temperature Physical nature ANSWER DOWNLOAD EXAMIANS APP
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